Patch Changes

• fix: correctly add __svelte_meta after else-if chains (#17830)

• perf: cache element interactivity and source line splitting in compiler (#17839)

• chore: avoid rescheduling effects during branch commit (#17837)

• perf: optimize CSS selector pruning (#17846)

• fix: preserve original boundary errors when keyed each rows are removed during async updates (#17843)

• perf: avoid O(n²) name scanning in scope generate and unique (#17844)

• fix: preserve each items that are needed by pending batches (#17819)